Question: Is the Sikkim coextensive with the constituency of the Raja Sabha?
Paraphrase: Is the Sikkim coextensive with the voting demographic of the Raja Sabha?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P3403 wd:Q1505 . ?sbj wdt:P31 wd:Q57156205 } 
Answer: Sikkim